Force, a push or a pull that acts on an object, measured in Newtons (N), Push, a force that acts on an object to move it away, Pull, a force that acts on an object to move it towards the pull’s origin, Contact force, a force applied by a body that is in contact with the object it is acting on, for example: friction, or pushing a toy car with your hand, Non-contact force, a force applied to an object by a body that is not in direct contact with it, for example: gravity or magnetism, Gravity, a force that pulls all objects towards the centre of the Earth, Friction, a force that opposes motion, Air resistance, a kind of friction (a force that opposes motion) which occurs between air and another object, Balanced force, is when the object will maintain its current state of motion, Unbalanced force, is when the object will change its state of motion. The object may speed up, slow down or change direction., Freebody diagram, Mass is, the amount of matter in an object., Weight is, the force that gravity acts on an object., A Fair test is an experiment that is designed to have, an independent variable, dependable variable and control variables., An independent variable, is the variable that is changed in an experiment. For example the surface area of Parachutes., A dependent variable, is the variable that is measured in an experiment. For example, time in seconds in the Parachute experiment., Control variables, are the variables in an experiment that are kept the same for each trial. For example in Parachutes: Height of drop and egg weight.

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